On Fri, 6 Mar 2009 14:23:20 +0900
Kouya Shimura <kouya@xxxxxxxxxxxxxx> wrote:
> Hi,
>
> Using D3hot state of PCI devices in xen is not mature yet.
> I met domain destruction/creation troubles in some PCI cards since the
> PCI config registers can't be read with D3hot state. xend.log is attached.
>
> This patch set makes the management of PCI D-states by guest optional.
>
> The default is "pci_power_mgmt=0" which disables the guest OS from
> managing D-states because it would be better to avoid the trouble than
> advantage of low power consumption.
>
> Thanks,
> Kouya
>
> From xend.log:
>
> [2009-03-04 09:49:24 4356] ERROR (XendDomainInfo:2584)
> XendDomainInfo.destroy: domain destruction failed.
> Traceback (most recent call last):
> File "/usr/lib64/python/xen/xend/XendDomainInfo.py", line 2578, in destroy
> do_FLR(self.domid)
> File "/usr/lib64/python/xen/xend/XendDomainInfo.py", line 314, in do_FLR
> raise VmError("pci: failed to locate device and "+
> VmError: pci: failed to locate device and parse it's resources - ord()
> expected a character, but string of length 0 found
> ...[snip]...
> [2009-03-04 10:31:24 4343] ERROR (XendDomainInfo:2445)
> XendDomainInfo.initDomain: exception occurred
> Traceback (most recent call last):
> File "/usr/lib64/python/xen/xend/XendDomainInfo.py", line 2437, in
> _initDomain
> self._createDevices()
> File "/usr/lib64/python/xen/xend/XendDomainInfo.py", line 2049, in
> _createDevices
> devid = self._createDevice(devclass, config)
> File "/usr/lib64/python/xen/xend/XendDomainInfo.py", line 2016, in
> _createDevice
> return self.getDeviceController(deviceClass).createDevice(devConfig)
> File "/usr/lib64/python/xen/xend/server/DevController.py", line 67, in
> createDevice
> self.setupDevice(config)
> File "/usr/lib64/python/xen/xend/server/pciif.py", line 399, in setupDevice
> raise VmError("pci: failed to locate device and "+
> VmError: pci: failed to locate device and parse it's resources - ord()
> expected a character, but string of length 0 found
Hi, Shimura-san
In my environment, I can't draw above error.
So could you test the following patches?
http://lists.xensource.com/archives/html/xen-devel/2009-04/msg00829.html
I think your D-state problem is resolved with these patches.
Thanks,
--
Yuji Shimada
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